<template>
  <div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>
    <el-steps
      :active="2"
      process-status="wait"
      align-center
      style="margin-bottom: 40px"
    >
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="最终发布"/>
    </el-steps>
    <el-button type="text" @click="openChapterDialog()">添加章节</el-button>
    <!-- 章节 -->
    <ul class="chanpterList">
      <li v-for="chapter in chapterVideoList" :key="chapter.id">
        <p>
          {{ chapter.title }}
          <span class="acts">
<el-button type="text" @click="openVideo(chapter.id)">添加课时</el-button>
<el-button style="" type="text" @click="openEditChapter(chapter.id)">编辑</el-button>
<el-button type="text" @click="removeChapter(chapter.id)">删除</el-button>
</span>
        </p>
        <!-- 视频 -->
        <ul class="chanpterList videoList">
          <li v-for="video in chapter.children" :key="video.id">
            <p>
              {{ video.title }}
              <span class="acts">
<el-button type="text">编辑</el-button>
<el-button type="text" @click="removeVideo(video.id)">删除</el-button>
</span>
            </p>
          </li>
        </ul>
      </li>
    </ul>
    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">上一步</el-button>
        <el-button
          :disabled="saveBtnDisabled"
          type="primary"
          @click="next"
        >下一步
        </el-button
        >
      </el-form-item>
    </el-form>
    <!-- 添加和修改章节表单 -->
    <el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">
      <el-form :model="chapter" label-width="120px">
        <el-form-item label="章节标题">
          <el-input v-model="chapter.title"/>
        </el-form-item>
        <el-form-item label="章节排序">
          <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
      </div>
    </el-dialog>
    <!-- 添加和修改课时表单 -->
    <el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
      <el-form :model="video" label-width="120px">
        <el-form-item label="课时标题">
          <el-input v-model="video.title"/>
        </el-form-item>
        <el-form-item label="课时排序">
          <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
        </el-form-item>
        <el-form-item label="是否免费">
          <el-radio-group v-model="video.free">
            <el-radio :label="true">免费</el-radio>
            <el-radio :label="false">默认</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="上传视频">
          <el-upload
            :on-success="handleVodUploadSuccess"
            :on-remove="handleVodRemove"
            :before-remove="beforeRemove"
            :on-exceed="handleUploadExceed"
            :file-list="fileList"
            :action="BASE_API+'/eduvod/video/uploadAlyVideo'"
            :limit="1"
            class="upload-demo">
            <el-button size="small" type="primary">上传视频</el-button>
            <el-tooltip placement="right-end">
              <div slot="content">最大支持1G，<br>
                支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
                GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
                MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
                SWF、TS、VOB、WMV、WEBM 等视频格式上传
              </div>
              <i class="el-icon-question"/>
            </el-tooltip>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
        <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
import chapter from '@/api/edu/chapter'
import video from '@/api/edu/video'

export default {
  data() {
    return {
      saveBtnDisabled: false, // 保存按钮是否禁用
      chapterVideoList: [],
      courseId: '',
      dialogChapterFormVisible: false,//章节弹框是否显示
      dialogVideoFormVisible: false,//小节弹窗
      chapter: {
        title: '',
        sort: 0,
        courseId: ''
      },//封装章节的数据
      video: {
        title: '',
        sort: 0,
        free: 0,
        videoSourceId: '',
        videoOriginalName: ''//上传视频的名称
      },//小节数据

      fileList: [],//上传文件列表
      BASE_API: process.env.BASE_API//接口地址
    }
  },
  created() {
// 获取路由中的id值
    if (this.$route.params && this.$route.params.id) {
      this.courseId = this.$route.params.id
    }
    this.getChapterVideo()
  },
  methods: {

    //点击X调用方法
    beforeRemove(file, fileList) {
      return this.$confirm(`确定移除 ${file.name}？`);
    },

    //点击删除框确定按钮
    handleVodRemove() {
      video.deleteAlyVideo(this.video.videoSourceId).then(response => {
        this.$message({
          type: "success",
          message: "删除视频成功"
        })
        //把文件列表清空
        this.fileList = []

        //把video对象里的id和name清空
        this.video.videoSourceId = ''
        this.video.videoOriginalName = ''
      })
    },

    //视频
    handleVodUploadSuccess(response, file, fileList) {
      //上传视频的id赋值给课时对象
      this.video.videoSourceId = response.data.videoId
      //上传视频的名称
      this.video.videoOriginalName = file.name
    },
    handleUploadExceed() {
      alert("点击了确定")
    },

//=====================小节操作===================
    removeVideo(videoId) {
      this.$confirm("此操作将永久删除课时记录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
//调用删除方法
        video.deleteVideo(videoId).then(response => {
// 删除成功
          this.$message({
            type: "success",
            message: "删除成功!",
          });
//回到列表页面,刷新数据
          this.getChapterVideo();
        })
// chapter
//   .deleteChapter(chapterId)
//   .then((response) => {
//     //删除成功
//     this.$message({
//       type: "success",
//       message: "删除成功!",
//     });
//     //回到列表页面,刷新数据
//     this.getChapterVideo();
//   })
      });
    },
    openVideo(chapterId) {
      this.dialogVideoFormVisible = true
//设置章节ID
      this.video.chapterId = chapterId
//清空表单数据
      this.video.title = ''
      this.video.sort = 0
    },
//添加章节
    addVideo() {
//设置课程ID
      this.video.courseId = this.courseId
      video.addVideo(this.video).then(response => {
//关闭弹框
        this.dialogVideoFormVisible = false
//提示信息
        this.$message({
          type: 'success',
          message: '添加课时信息成功'
        })
//刷新页面
        this.getChapterVideo()

        //把文件列表清空
        this.fileList = []
        //把video对象里的id和name清空
        this.video.videoSourceId = ''
        this.video.videoOriginalName = ''
      })
    },
//添加或修改小节
    saveOrUpdateVideo() {
      this.addVideo()
    },
//=====================章节操作===================
//删除章节
    removeChapter(chapterId) {
      this.$confirm("此操作将永久删除章节记录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
//调用删除方法
        chapter
          .deleteChapter(chapterId)
          .then((response) => {
//删除成功
            this.$message({
              type: "success",
              message: "删除成功!",
            });
//回到列表页面,刷新数据
            this.getChapterVideo();
          })
      });
    },
//修改章节弹框做数据回显
    openEditChapter(chapterId) {
      this.dialogChapterFormVisible = true
      chapter.getChapter(chapterId).then(response => {
        this.chapter = response.data.chapter
      })
    },
//点击打开弹框
    openChapterDialog() {
      this.dialogChapterFormVisible = true
//清空表单数据
      this.chapter.title = ''
      this.chapter.sort = 0
    },
//添加章节
    addChapter() {
      this.chapter.courseId = this.courseId
      chapter.addChapter(this.chapter).then(response => {
//关闭弹框
        this.dialogChapterFormVisible = false
//提示信息
        this.$message({
          type: 'success',
          message: '添加课程信息成功'
        })
//刷新页面
        this.getChapterVideo()
      })
    },
//修改章节
    updateChapter() {
      chapter.updateChapter(this.chapter).then(response => {
//关闭弹框
        this.dialogChapterFormVisible = false
//提示信息
        this.$message({
          type: 'success',
          message: '修改课程信息成功'
        })
//刷新页面
        this.getChapterVideo()
      })
    },
//添加章节
    saveOrUpdate() {
      if (!this.chapter.id) {
//添加
        this.addChapter()
      } else {
//修改
        this.updateChapter()
      }
    },
// 根据课程id查询章节和小节信息
    getChapterVideo() {
      chapter.getAllChapterVideo(this.courseId).then((response) => {
        this.chapterVideoList = response.data.allChapterVideo
      })
    },
// 上一步
    previous() {
      this.$router.push({path: '/course/info/' + this.courseId})
    },
// 下一步
    next() {
      this.$router.push({path: '/course/publish/' + this.courseId})
    }
  }
}
</script>
<style scoped>
.chanpterList {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.chanpterList li {
  position: relative;
}

.chanpterList p {
  /*float: left;*/
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #ddd;
}

.chanpterList .acts {
  float: right;
  font-size: 14px;
}

.videoList {
  padding-left: 50px;
}

.videoList p {
  /*float: left;*/
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #ddd;
}
</style>
